//检查一个点周围是否为陆地，并且附近没有玩家
//满足返回true

params ["_pos", "_dis"];


if(surfaceIsWater _pos) exitWith{false};

if(_dis == 0) exitWith{true};

private _ret = true;
{
	if(_x distance2D _pos < _dis) exitWith
	{
		_ret = false;
	}
}forEach (call fn_getPlayerRed);
_ret
